Thread guide for spinning or twisting frames



1931- J. H. BOLTON ET AL 1,834,933

THREAD GUIDE FOR SPINNING OR TWISTING FRAMES Filed Oct. 7. 1950 F153. 36 F194. 32 I:

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M 9% 730%.. BY Jaw za. 6112. MW. ATTORNEYS.

Patented Dec. 8, 1931 v UNITED STATES PATENT OFFICE JOHN H. BOLTON AND STILLMAN B. HYDE, 0F WHITINSVILLE, MASSACEUSETTS, AS- SIGNORS T0 WHITIN MACHINE WORKS, OF WHITINSVILLE, MASSACHUSETTS, A COR- PORATIQET CI'? MASSACHUSETTS THZREAD GUIDE FOR SPINNING 0R TWISTING FRAMES Application filed October 7, 1930, Serial No. 487,012.

This invention relates to thread guides such as are used in spinning and twisting frames to guide the yarn or thread to the rings and spindles.

It is the object of our invention to provide a thread guide so designed and constructed that it may be easily threaded and that the thread cannot he accidentally unthreaded, whether twisting in a right hand or in a left hand direction.

A further object of the invention is to provide a thread guide so designed that it can be easily produced in porcelain or similar molded material and that it is well adapted to be formed as a single unitary structure.

Our invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a sectional side elevation of portions of a spinning or twisting frame embodying our improvements;

Fig. 2 is a plan view of a portion of the thread board on which our improved guide is mounted;

Fig. 3 is a plan of our improved guide;

Fig. 4 is a front elevation thereof;

Fig. 5 is a sectional side elevation, taken along the line 55 in Fig. 3; i

Fig. 6 is a plan view of a holder adapted to receive our improved guide;

Fig. 7 is a sectional side elevation thereof, taken along the line 77 in Fig. 6; and

Fig. 8 is a sectional front elevation of the thread board, taken along the line 88 in Fig. 2.

Referring to the drawings, we have indicated portions of a spinning or twisting frame comprising feed rolls 1010, a thread board 11, mounted on a frame member 12 and having sectional hinged portions 13, a ring rail 14 supporting the usual rings 15, a traveler 16 on the ring 15 and a bobbin B on which the thread T is wound as it is drawn through the traveler 16.

A plate 20 is secured to each thread board section 13 by screws 21 (Fig. 8) and a sheet metal holder 22 is inserted in a slot 23 in the thread board section 13 and is securely held therein by the clamping pressure of the screws 21. Theslot 23 is of such width as to permit limited angular adjustment of the holder 22 and the holder may also be adjusted forward and back in the slot to bring the thread guide in proper alignment with the bobbin B.

The outer end of the holder 22 is depressed to form an open-sided cup-like member 25 adapted to receive and support the thread gui e.

The parts thus far described are in general of the usual commercial construction and in themselves form no part of our present invention which relates more particularly to the construction of the thread guide 30 (Fig. 3).

The thread guide 30 is preferably formed from a single piece of material and we profer to construct the same by molding the guide from porcelain. The guide 30 is shown as provided with parallel side walls and a semi-cylindrical rear wall and is adapted to fit snugly in the portion 25 of the holder 22.

The guide 30 is also provided with a central opening or passage 31 extending therethrough and preferably having a straight vertical rear wall 32. The front wall of the openin is provided with a straight Vertical slot 33 between hook-shaped and rearwardly extending members 3 1.

These members 34 are so shaped on their outer portions as to provide a tapering entrance guideway for the thread and they extend rearward beyond the front wall of the passage 31, thus providing recesses 36' to receive the thread and prevent accidental dis placement thereof.

As two such recesses 36 are provided, one on each side of the vertical slot 33, the thread will be caught and held in one of the recesses 36, regardless of whether the thread is being twisted right hand or left hand.

Preferably the front side of the passage 31 is forwardly enlarged downwardly, as indicated in Fig. 5, and in dotted lines in Fig. 3, thus allowing the thread to take a path corresponding more or less to the position of the thread occasioned by the ballooning thereof in its travel to the rin and bobbin.

Reference'to Fig. 2 will show that the plate 20 has a; substantially circular openingAO aligned .withthe-thread guide 30 and also has a V-shaped opening 41.by which the thread is guided to the V-shaped opening of the thread guide.

As the slot 33 is vertically positioned and is freely open from front to back, the thread will be drawn directly into the passage 31 by the pull of the bobbin and will be held from accidental displacement thereafter by the hook-like members 34, which retainthe thread in the recesses 36.

Having thus described our invention and the advantages thereof, we do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what.

We claim is 1. A thread guide for a spinning or twisting machine comprising a single piece of molded material having a vertical thread passage therethrough, a straight vertical threading slot in the front wall of said passage, and a pair of inwardly curved hooklike projections, one at each side of said vertical slot, the thread-engaging surfaces of said thread guide being symmetrical with respect to said vertical threading slot in all horizontal sections of said guide, whereby said thread guide is rendered effective to guide and retain a thread of either right hand or left hand twist.

2. The combination in a thread guide as set forth in claim 1, in which the front wall of said thread guiding passage is undercut and inclined downwardly and outwardly with respect to the rear wall thereof.

40 In testimony whereof they have hereunto aflixed their signatures.

JOHN H. BOLTON. STILLMAN B. HYDE. 

